package demo3;

public class KeyBoard implements IUsb{

    @Override
    public void openDevice() {
        System.out.println("连接键盘...");
    }

    @Override
    public void closeDevice() {
        System.out.println("关闭键盘...");
    }
    public void input() {
        System.out.println("输入数据...");
    }
}
